package com.ruoyi.common.utils.security;

import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.bean.BeanUtils;
import com.ruoyi.project.system.user.domain.User;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.SimplePrincipalCollection;
import org.apache.shiro.subject.Subject;

/**
 * shiro 工具类
 *
 * @author ruoyi
 */
public class ShiroUtils {
    public static Subject getSubject() {
        return SecurityUtils.getSubject();
    }

    public static Session getSession() {
        return SecurityUtils.getSubject().getSession();
    }

    public static void logout() {
        getSubject().logout();
    }

    public static User getSysUser() {
        try {
            User user = null;
            Object obj = getSubject().getPrincipal();
            if (StringUtils.isNotNull(obj)) {
                user = new User();
                BeanUtils.copyBeanProp(user, obj);
            }
            return user;
        } catch (Exception e) {
            return null;
        }
    }


    public static void setSysUser(User user) {
        Subject subject = getSubject();
        PrincipalCollection principalCollection = subject.getPrincipals();
        String realmName = principalCollection.getRealmNames().iterator().next();
        PrincipalCollection newPrincipalCollection = new SimplePrincipalCollection(user, realmName);
        // 重新加载Principal
        subject.runAs(newPrincipalCollection);
    }

    public static Long getUserId() {
        return getSysUser().getUserId().longValue();
    }

    public static String getLoginName() {
        if (getSysUser() == null) {
            return "iam";
        }
        return getSysUser().getLoginName();
    }

    public static String getIp() {
        return StringUtils.substring(getSubject().getSession().getHost(), 0, 128);
    }

    public static String getSessionId() {
        return String.valueOf(getSubject().getSession().getId());
    }
}
